The women of the "Unit" are asked to leave the base when danger looms for them, while the men are away trying to find out who wants to assassinate the President and Vice President.

The men of the Unit are on the hunt to find out who ordered the assasination of the President Elect, as they follow a scientist on a flight who may be the next target of the group. Things back at home are hectic as the women are allowed back on base, but not as the women you knew them as.

While the Unit is investigating a man they believe to be smuggling nuclear weapons, they discover that he is also smuggling women.

Bob and Mack both find themselves in trouble when they each take assignments undercover: Bob as a chemist, who hides cocaine by converting it into paint and Mack, as a prize fighter who tries to bust an illegal betting ring.

The unit is assigned to retrieve a nuclear scientist, but he wants more before he will go with him. Back at home, Jonas and the wives work on a covert operation of their own.

The team tries to convince a man to give up his accomplices by making him believe that the attack already happened. Mack is preoccupied trying to find out information about Tiffy's affair with Ryan.

When Betsy Blane is taken hostage, Jonas and his team go to Iraq and begin their plan to rescue her. On the home front, Mack works on making Ryan pay for having an affair with Tiffy.

Jonas and the team are in Iraq and continue towards freeing Betsy Blane from her capturers. On the home front, Mack finds an opportunity to get back at Ryan.

In order to keep peace between two Afghanistan tribes, the team is assigned to deliver a young woman to her future husband. On the home front, Bob works with his wife, Kim to find a man who is believed to be working with terrorists.

When the team is ordered to raid an anthrax lab, they find themselves fighting against their ally; a political official who thinks the high-tech gadgetry is better than field logic. On the home front, Kim finds herself in a life-threatening situation when her boss tells her to help him, cover up a cuddle.

A mysterious women shows up at Aerodyne headquaters. Kim is finally reunited with her kids.

A CIA agent who's gone over to the other side plays a game of Baccarat with Jonas and if Jonas wins the man will help out on their current mission. The team is working with the CIA and their success may have implications to one of their own who is in trouble.

Mack gets badly wounded while on a mission with Jonas and they must seek refuge in a monk's monastery. On the home front, Bob is assigned to a dangerous mission which gives Kim a glimpse into the darker side of his job.

The Unit is ordered to capture a Nazi war criminal from hiding and deliver him to The Hague. Colonel Ryan is offered a promotion to General and must deal with his past.

The Unit welcomes a new team member. Jonas helps Betsy prepare for an interview regarding her kidnapping.

When a deadly gas is released into the air, the men and their families are trapped in their homes. Without an access to the outside world, they must find a way to survive this attack.

The Unit is sent in to rescue an old friend and finds themselves in trouble. On the home front, Tom finds a lead in a terrorist attack and implements some extreme measures to get the information from a suspect.

Things go wrong when Jonas and Mack go undercover in an attempt to find the terrorists whohuged the vice president.

One of the Unit members attacks their own and the team must deal with them.

A well thought out and planned mission is affected by a random event leaving Jonas and Bob to plan a new mission.

Molly is kidnapped and used as bait, while Jonas is out of the country looking into a Russian terrorist cell.

When several dirty bombs are found on American soil, The Unit is deployed to find and diffuse.

On the home front, the wives prepare for a wedding and a possible divorce.